Wednesday, March 14, 2012

Ooey Gooey Goobleck

Is it a liquid?  Is it a solid?  No, it's ooey gooey!

This is one of the strangest things I have ever made with my kid. 
Weird things happen when you mix cornstarch and water.

Squeeze it to make it solid

If you press your finger tips down on it or try to grab a handful it feels like a solid.  As soon as you let go it drips from your fingers like a liquid (especially when you are trying to take a picture of the solid phase)!

Age:  2+

Time:  5 minute tops to assemble.

Cleanup:  Very easy.  Even easier if you let it dry so you can sweep it up.  Start with a dry towel on countertops, then follow with a wet one.

What you need:
  • 1 cup of cornstarch + more to make it more solid in a hurry
  • 1 cup of water
  • large flat bowl or pan
  • spoon

1) Mix equal parts of water and cornstarch in a bowl.  Add more cornstarch until it feels kind of thick when you stir it.  You can add more if you want it to be more solid (or only add half the water at first).

2) Now stick your hands in it and play!  Try to scoop up a handful and squeeze it or roll it to make a ball.  I like to let it drip from my fingers.  It kind of vibrates in a strange way.

Definitely liquid

Special thanks to Science World British Columbia for the inspiration!

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